“The Constitutional Court recognizes that the Treaty corresponds to the Russian Constitution,” the Constitutional Court chairman, Valery Zorkin, said on Wednesday.

On Tuesday, March 18, Russian President Vladimir Putin approved the draft treaty on Crimea's reunification with Russia and the formation of new sub-federal entities as part of the Russian Federation. He also notified both chambers of the Russian parliament on the proposals by Crimea's Supreme Council and the legislative assembly of Sevastopol on their joining the Russian Federation.

On Monday, March 17, the Crimean parliament, which declared Crimea an independent state, authorized Prime Minister Sergey Aksyonov and parliament Speaker Vladimir Konstantinov to sign an interstate treaty with the Russian Federation on the admission of the Republic of Crimea and the city of Sevastopol, which has a special status, into the Russian Federation.

The Treaty will be effective since its signing and comes into effect since its ratification.

Earlier in the day, speaker of the State Duma, lower house of Russia’s parliament, Sergei Naryshkin said the Russian president would submit the Treaty and the draft federal constitutional law “just today”.

“We’re ready to discuss and approve these laws within the shortest period of time in full compliance with the norms of international law and the Duma regulations. We’ll do it till the end of the week,” he said.

State Duma lawmakers do not rule out that the documents will be approved at an extraordinary plenary session on March 20. Members of the Federation Council, upper house of parliament, are planning to gather over this issue on March 21.